Solve the following system of equations by the method of your choice.
-2x + y = 3
-4x + 2y = -20
a. none of the above
b. infinitely many solutions
c. no solution
d. one solution

Answers

Answer 1

Answer:

c. no solution

Step-by-step explanation:

This system of equations has no solution because when graphed, the lines are parallel to each other. Meaning they will never intersect. Since they will never intersect, there are no solutions.


Related Questions

Multiply:

2 1/4 x 1 1/2 x 5/3=?

Answers

Answer:

The answer is 48.12, I didn't used calculator

Hiiioo! Can someone please help ❤️❤️:( :D

Answers

Answer:

I cant see it....

Step-by-step explanation:

Is 9/10, 1 1/5, 1 1/2 a right triangle?

Answers

Answer:

using Pythagoras theorem 11/2 is the largest side so let a=9/10 b=11/5 c=11/2

a²+b²=c²

(9/10)²+(11/5)²=(11/2)²

81/100+121/25=121/4

lcm of 25 and 100 =100

(81+484)/100=121/4

565/100=121/4

113/20=121/4

since they are not equal therefore it's not a right angle triangle

PLZ HELP I WILL GIVE BRAINLIEST

Answers

Answer:

a. the sign is interchange

it should be = x^2 - 3x + 4 - x^3 - 7x + 2

Answer:

see explanation

Step-by-step explanation:

(a)

The student has distributed the second parenthesis by 1 instead of - 1

(b)

Given

(x² - 3x + 4) - (x³ + 7x - 2)

distribute the first parenthesis by 1 and the second by - 1, that is

= x² - 3x + 4 - x³ - 7x + 2 ← collect like terms

= - x³ + x² - 10x + 6

PLEASE HELP> I NEED ANSWER ASAP. GEOMETRY

Answers

Answer:

Angle 4=82 degrees, then i think angle 1 and 3= 98 degrees

Step-by-step explanation:

Angle 2=Angle 4 and 180-82=98

D 122x - 123y + 124
An ice cream shop sells 24 scoops of vanilla ice cream and 42 scoops
of chocolate ice cream. What is the ratio of vanilla scoops to total scoops
of ice cream sold?

Answers

Answer:

24:66

Step-by-step explanation:

2. The volume of a cylinder varies jointly with its height and the square of the radius. A 7.85 cubic inch spice container is 2.5 inches tall and has a radius of 1 inch. Another spice container is 3 inches tall with a radius of 1.5 inches, what would be the volume?

Answers

Answer:

Volume=21.195 cubic inch

Step-by-step explanation:

The volume of a cylinder varies jointly with its height and the square of the radius is expressed as

V∝hr^2

Introducing our constant of proportionality,K we have that

V =Khr^2

Given that A 7.85 cubic inch spice container is 2.5 inches tall and has a radius of 1 inch. We have that

V =Khr^2

7.85=K 2.5 X 1^2

K=7.85/2.5 x1

K=3.14

Given that another spice container is 3 inches tall with a radius of 1.5 inches, Volume=?

V =Khr^2

V=3.14 X 3 X 1.5^2

V=21.195 cubic inch

Can yall help im mentally slower than the average human

Answers

Answer:

I think it would be 216cm

Step-by-step explanation:

how I got this answer?:

cubes are mostly the same in all sides due to all the sides being equal

The area of 6 squares is 216 cm^2
Each square is then 216/6 or 36 cm^2

The area of a square is length of one side times the length of an adjacent side or Area = s^2
36 = s^2
s = 6

!!!Please help will give the brainliest, and please do not put in a silly answer because you want some points or I will report you!!! What are the properties for each of these shapes and please be specific for each, a kite, trapezoid, square, rectangle, parallelogram, rhombus?

Answers

Answer:

The properties of trapezoid apply by definition (parallel bases).

The legs are congruent by definition.

The lower base angles are congruent.

The upper base angles are congruent.

Any lower base angle is supplementary to any upper base angle.

The diagonals are congruent.The bases are parallel by definition.

Each lower base angle is supplementary to the upper base angle on the same side.

The figure below shows a right pyramid with a square base.
Imagine a cross-section of the pyramid formed by a plane cutting through it that meets these conditions.
• The plane passes through the top vertex of the pyramid.
The plane is perpendicular to the base of the pyramid.
What must be true about the cross section?
o It is a right triangle.
O It is an isosceles triangle.
0 It is an obtuse triangle.
It is an equilateral triangle.

Answers

Answer:

Step-by-step explanation:

Solve.


x + 7 = –2


A. 9

B. 5

C. –5

D. –9

Answers

Answer:

X = 9, in other words it's A

Step-by-step explanation:

Answer:

-9

Step-by-step explanation:

x+7=-2

 -7   -7

-7 plus -2 equal 9

:) hope that helped

A circle has a diameter of 16 cm. Find its circumference. (Use the calculator's value
of 1. Round your answer to the nearest tenth.).

Answers

Answer:

the answer rounded to the nearest tenth is 37.7 cm.

Step-by-step explanation:

PLEASE HELP ASAP PLEASE!! WILL GIVE BRAINLEST PLEASE​

Answers

Answer:

what is 5x5x8

Step-by-step explanation:

5x5=25

25x8=200

so your awnser is 200

Answer:

105

Step-by-step explanation:

To find the surface area, we need to find the area of all the sides. There are five sides, but four of them are exactly the same.

To find the area of a triangle, you need to do width x height / 2. The width is five and the height is eight. 5 x 8 / 2 = 20. There are three more sides that have the exact same area as this. Since there are four sides that have a surface area of twenty, we do 20 x 4 = 80. Then, we find the area of the bottom piece. To find the area of a square, you need to do length x width. 5 x 5 = 25. Then, we add our two areas to get the final result. 80 + 25 = 105. Therefore, 105 is the surface area of the pyramid.

Hope this helps! Thanks for brainliest! :D

13 POINTS FOR THIS PLEASE

Answers

Answer: Independnt Variable: direct light

Dependnt variable: the plant growth

Step-by-step explanation:

The plant growth depends on the light

Income East and West of the Mississippi




For a random sample of households in the US, we record annual household income, whether the location is east or west of the Mississippi River, and number of children. We are interested in determining whether there is a difference in average household income between those east of the Mississippi and those west of the Mississippi.



Incorrect answer iconYour answer is incorrect.



(a) State the null and alternative hypotheses. Your answer should be an expression composed of symbols:



Let group 1 be the households east of the Mississippi River and let group 2 be the households west of the Mississippi River.



(b) What statistic(s) from the sample would we use to estimate the difference?



Let group 1 be the households east of the Mississippi River and let group 2 be the households west of the Mississippi River.

Answers

Answer:

H0: μ1 = μ2

H1: μ1 ≠ μ2 ;

xbar1 - xbar2

Step-by-step explanation:

The Null hypothesis should state that there is no difference in average household income between those located east and west of the Mississippi

H0: μ1 = μ2

H1: μ1 ≠ μ2

Statistic from the sample that would be used to estimate difference

Statistic refers to the numerical characteristic derived from the sample.

To estimate the difference in the average household income between those located east and west of the Mississippi, we take the sample mean of the two groups

Group 1, East of Mississippi = xbar 1

Group 2, West of Mississippi River = xbar 2

xbar1 - xbar2

$22.00+$14.00=
answer this

Answers

Answer:

$36

Step-by-step explanation:

22+14=36

What is the solution for the inequality –2x + 7 ≥ –11?

Answers

Answer: 2

2x-7=11  X=9  set up the up the negative portion of solutions Set up the negative portion of the 2x - 7= - 11   x= -2  and then x = 9,-2

Step-by-step explanation:

Answer:

Step-by-step explanation:

-2x+7≥-11

-2x≥-18

2x≤18

x≤9

The number of 5p, 10p, and
20p coins in a jar are in the
ratio 7:4:3. If there are
5p coins are worth 70p
calculate the total value of
the money in the jar.

Answers

Answer:

Step-by-step explanation:

70p/5=14

14*4=56*10=560p

14*3=42*20=840p

840+560+70=1470

=1470p or (£14.70)

The total value of money in the jar is 270p.

What is addition?

Combining objects and counting them as one big group is done through addition. In arithmetic, addition is the process of adding two or more integers together. Addends are the numbers that are added, and the sum refers to the outcome of the operation.

Given:

The number of 5p, 10p, and 20p coins in a jar are in the ratio 7:4:3.

That means,

Number of 5p coins are 5x, 10p coins are 4x and 20p coins are 3x.

And 5p coins are worth 70p.

That means, x = 70p/5p

x = 14

So,

The total worth of coins are,

= 70p + 80p + 120p

= 270p

Therefore, the worth of the coins are 270p.

To learn more about the addition;

brainly.com/question/29464370

#SPJ2

7. A minor arc of a circle subtends an angle of 1059 at the centre of the circle. If the radius of the circle is 8.4 cm,
find the length of the major arc.
[tex]\pi = 22 \\ 7[/tex]

Answers

25 56 times 46 that is the answer becasue it is

120% of what number is 3.6?

Answers

y = 3.6/120 x 100/100 = 3/100 = y = 3
I’m not sure hopefully you find the answer I’m sorry for the inconvenience

Honestly I'm stressed doing schoolwork. Girl bestie to play iMessage games??

Answers

Answer:

wut-

Step-by-step explanation:

Maggie has $16 to spend on lunch for the week. she has spent $4 so far. which inequality shows how much she can spend for the rest of the week?

Answers

She can spend less than or equal to $12

Order the sides or angles of each triangle from least to greatest.

Answers

Answer:

Step-by-step explanation:

VW<WX<VX

25°<65°<90°

What is the answer please help

Answers

Answer:

I don't see a problem on the screen

Step-by-step explanation:

An item is regularly priced at $30. It is now priced at a discount of 30% off the regular price. What is the price now?

Answers

The price of the item will be 21$

Hal's business made 50,0000 last year. This year, his business made 650,000. What is the percentage difference?

Answers

The percentage difference in the amounts made is 30%.

What is the percentage difference?

Percentage can be described as a fraction out of an amount that is usually expressed as a number out of hundred.

Percentage difference= [ (amount made this year / amount made last year) - 1 ] x 100

'(650,000 / 500,000) - 1] x 100 = 30%

To learn more about percentages, please check: https://brainly.com/question/25764815

#SPJ1

Simplify
sec x - tan x sin x

Answers

Answer:

cos x

Step-by-step explanation:

sec x - tan x sin x

[tex]\frac{1}{cosx} - \frac{sinx}{cosx} * sinx\\\\\frac{1}{cosx} - \frac{sin^{2}x}{cosx}\\\\\frac{1-sin^{2}x}{cosx} \\\\\frac{cos^{2}x }{cosx} \\\\cosx[/tex]

Solve system by substitution.

−5x−7y=3

x+6y=−19

Answers

-5x-7y=3
x+6y=-19
solve for x
x=-19-6y
substitution method
-5(-19-6y)-7y=3
when u solve u get y=-4
since y is -4
substitute that in
x+6(-4)=-19
x=5
so (x,y) = (5,-4)
x is 5 and y is -4

Nicholas Has a very large soup pot shaped like a cylinder that has a height of 20 inches and a radius of 6 inches. How much soup can Nicholas’s soup pot hold ?

Answers

Answer:

2262 in³

Step-by-step explanation:

Given that:

Height, h = 20 inches

Radius, r = 6 inches

Volume of a cylinder is given as :

V = πr²h

V = π * 6² * 20

V = π * 36 * 20

V = 2261.9467 in³

Hence, Nicholas pot can hold about 2262 in³ of soup

Please help ASAP! Will mark brainliest if correct :)

Answers

Answer:

x is equal to 12 mm

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